Random timing loss.. Help!

[JSarge]

Well, it runs fine without the crank sensor after a few more seconds of cranking as you said. Good to know that its working. I'm really fooled that its the crank sensor. The local part store only has after market, i dont think i want to waste my time. Im going to wait till next week, and order an ACDelco from Rockauto. If this thing jump out of time again, im just going to unplug the crank sensor and see if it goes back to where it should be.

As far as the intense amount of white smoke, its definitely not coolant cause the level hasnt changed, and it has zero blow by and minimal oil infront of the compressor turbine. Im really thinking the turbo is SHOT OUT. Im going to upload a vid of me showing the shaft play, you guys tell me what you think. Keep in mind, this camera is under 1 megapixel, and you can still see the shaft play!

http://www.youtube.com/watch?v=4UPty_uGQK

http://www.youtube.com/watch?v=4UPty_uGQK

[Big Blue DSL]

If you can push the shaft side to side and have the wheel touch the housing it's all done .
Have you done a time set and tdc learn procedure with gmtdscantech ?



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[JSarge]

Originally Posted by Big Blue DSL

If you can push the shaft side to side and have the wheel touch the housing it's all done .
Have you done a time set and tdc learn procedure with gmtdscantech ?



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If i pull on the shaft at all, it locks up and doesnt turn. Im assuming its hitting the housing, but regardless it locks up if i put any type of tension on the shaft (up down etc). I just cant think of anything else that would cause this thing to smoke.

If look at my prior videos in this post or the text, it shows me attempting a TDC timeset and TDCO learn. It is wacky. The advertised timing sticks at 0 when either function is on (normal) .. but the actualy timing that it posts is over 25 (twenty five) degrees! Shouldnt be around ~8-11*? It makes no sense that it can report a number like that and still run. Which is why im thinking a sensor is faulty somewhere.

[JSarge]

Keep in mind, when i was moving the pump around after setting up the engine, no matter where the pump was turned too, it would report that crazy 25.x* actual timing. Again, telling me a sensor is reporting a bad number.

P.s... video fixed

[Big Blue DSL]

Does it have any codes in it?
It needs to be up to above 170 for the time set and tdc to work
You run the time set and it should have 3.5 degrees actual and I believe desired should be 0
Then run the tdco learn



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[JSarge]

Yes, i followed all of the proper instructions to time it. Wait to be above 170*F, clear codes, and run the time set functions. Regardless of where the pump is turned too, it posts outrageous numbers that are WAY out of tolerance yet, it goes up and down the road and hits on all 8. It just has to be the crank sensor. Theres nothing else that would report just nutty numbers.. that i know of.

[Big Blue DSL]

For sure man I would get a new crank sensor in it ASAP


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[JSarge]

Yeah, i plan on it. What is the easiest way to pull the current crank sensor out of the timing cover? Is it a pressed in deal or is it threaded? The top of the sensor is practically gone, which looks to be where you could or 'used to be able to' get a wrench on it. Someone told me just to pull on the wire and it will pop out after the retainer is off, but didn't seem all that accurate.

[Big Blue DSL]

Iirc they just press into the timing cover, should pull out but I bet u could use a set of vise grips on the end of the old one to pull it out after the retainer is removed


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[racer55]

If you do a timeset command the timing is supposed to make an attempt to get to 0 degrees,IIRC since the way the system is designed 3.5 degrees actual timing is normal.

Timeset IMHO only real value is to tell you that the stepper motor is capable of working-the #'s mean very little in real life.

The TDCO relearn is much more important.